Canvas cutter and butt joiner



2 Sheets-Sheet 1 Sept, 27, 1 949.

R. a. HANKE CANVAS CUTTER AND BUTT JOINER Filed Sept. '8, 1948 Sept. z.1.,'19 g. R. E. HAN'KE 2,483 9 CANVAS CUTTER AND BUTT JOINER Filed Sept. 8, 194a 2 Sheets-Sheet 2 INVEN TOR. Reynold E. Honke Atforney Patented Sept. 27, 1949 sums PAT J FF ion 2,483,092. canvas Aunnnazmnnumn Reynold flifiankafihicagoglll.

fipplicdtion septeniber 8, I848,sSerial No.:48?289 :Myinvention relatswrtn nanvas-zcuttemamijautt iloiner devices.

In applying dccoratoris canvas- :to walls :it is common practice to memap'the 40f ioining @ieces co'f: acanvas. and :by using 1a knife -or 'rnznr bladem cntiisrmade dowmthecentermfxthe roverlap or salvage scanvasnpor'tions -.provide 'a vbutt gioin't rfortheksaid :canuases; Ili'IiS' 9, 'dizflicultxopeualtion to guide a -.cutting lknife aistnaight line and atrthesameltime apply the :prnper :pressure thereto ior cutting two thicknesses of canvas without damaging'theawall-beneath 'Theuefqre, I; have devised. a :OEIWES cutter and Ebutt ijoiner, the handling ofrwhfch .xequires myilittlesskiilidro cutzalstraightlbutvjoint, and itheltlesign oiwhich prevents any damage to-the wall Ebeneath *the canvas.

An important object ofxmy inventionis to provide a canvas cutter :and' butt joining device of the above amen'tioned ;.character, having a pointed lguideshoe whichis inserted beneathfithe canvas :selivage portions, and wliich supports a cutting knife :with the cutting edge uppermost, thus preventing damage -to the wall and dulli'ng of the knife bladeiby contact withthe wall".

A further obj ect of :my invention-is to provide canvas holding rollers pivota-bly mounted on the canvas cutter :and butt joinin device for the purpose of holding "the -:ovei l'apedges tauti-y against the cutting edge of the knife during the cutting operation.

A still further @103 ect of my invention-ism provide-a canvas eutter-andbutt joiriing-device haw ing the means for removing and reversing; as

we'llasreplacing, the cuttingikriifie when the outting edge becomes dull through use.

A- further object of *my inventionis toprovide a canvascutting and butt joining -deviee having tension spring -means =for hold-ing the canvas mners in a firm and -close'contact withtheecanvas selvages during the cutting operation.

A still further object of my "invention is to provide a canvas-cutting and butt guiding-device that is simply designed andmaybe'economically manufactured in large-quantities;

Other objects and advantagesembraceddn my invention will be disclosed in the -followingdescript-ion and the accompanying illustraztiom -in which like parts-are designated by like *nurnerals, and in which:

Fig. 1 is -a-side--:view otmy-invention'withparts cut away "to show the mounting -of=the cutting knife means thereof.

Fig. 2 is amend view of my'lnventinn, taken Eig; -3,isan-;end mew-of, 'i-nventiqn, :nantly in cross-section, taken looking in the directien oi' lines; tr-13:01].

Rig-v4 .isda ira mentary =view'lof a-walliunon which two jflininggpieces of decorators names have'been-agplied withitheir edgesoverlanpi-ng.

Fig. 5lis amenlarged perspective viewof, my inlventinmshown heing-sstarted-at. the cutting lline Q-fthe salvage .portions o,f twnpiecesof dacoratpris canvas applied to a wall.

Fig. 6 is an enlangedperspective mew of my invention shown in, operation- :cutting- :and -.butt joining :the deconatorfscanvas.

Fig. 71s a .fragmental yxview rof .aawall with two joining piecesof decorators canvasthemoubein .cut and :butt ointed by invention and; show- ;ing the sewa e ed es. .of-lcamras :heingmemeted therefrom.

-8.ris agfiragmentary view 'Dfifiz'WilI on which two :piecesofv flecoratmfs; earn/as have been ibutt jointed, and showing the'strakisht and evenhutt joints between the itwov pieces f decoratorfscan- .VitS.

Referring to the illustrations, my inveutioniis means 3.3-, having: a knife -.andtguide smeiholdins portion iii-Lin "whiohzaguide :shoen'etaining slot 1:2. has been ii rmed, The said handle :meems 3.8 may preferably be :made. :of: plastic ii uide shoe element 42?; is nrictionally mounted within the said guide-;;shoeretainingsslot as lshown Figs. 1, 22 and ;3; The said guide :slme ielemerrt l1=3 is provided with a pointed toe portion M and :is preferably ziormedoisheatzmetal bent and folded together to :allow a cutting. knife, :designated 135', to be :frictionally :held joletween; drhe said :toe, portion M :and: the. :knite and guide-sshue :holding portion I I of s-hand-le means 1%.. .A kniieiretaim in-g screw sl 6; together with vwashers 1! 8 andiwing nut l1, hold the said guide shoe element illtzand cutting knife firmly in :place within :thezs'lot "t2 through. a ihfllfi ztfl" in :guide shoe element 13 and guide shoe holding portion M. :Loosening win-g nut it! permits the removal :and replacing oiknife a-blade r15. lAzbiiurcated roller support is pivoted :at :21 Jon 'handle :means 38, as shown in "Fig. 1. Canvas rollers szd are :mounted .on "the outside ofithe bifutcatedxportion 211', land held -rotatejbl-y in :place by a shoulder .=screw 1223. 'anda tubulanspacer 3'6. The said tubularspacer 3361's provided withm shoulder l, \as :shown :in Fig.8,

to maintain the bifurcations :26 and :the rollersi z infirmity, blltrnon-ifhictiunally in plane. .A lacknut :33: holds the said shoulder screw 13 loekingin-the'direction'oflines -2--2-on-'*Fig. 1-. tightly in place .whileilal'lowingzthe arollers rotate freely. A tension spring 24 is anchored at 25 on one end of handle means 38. The other end of tension spring 24 is secured by shoulder rivet 26 to the free ends of bifurcated roller support 20 to maintain the said bifurcated roller support 20 together with canvas rollers 22 in a normally downward position, as shown in Figs. 1, 2, 3 and 6. Stop portions 40 are formed on the lower edges of bifurcations 25 to contact washers l8 in preventing the tubular spacer 36 from touching the cutting edge of knife I5.

It is general practice in applying decorators,

canvas to walls to coat one side of the said decorators canvas with an adhesive, designated 34.

cutting line, designated 3i is drawn parallel with the edges of selvages 28 and 3B and midway therebetween.

Fig. 5 illustrates the starting of the cutting operation, wherein the point of toe portion I4 is inserted beneath the two thicknesses of salvage 29 and 35 and in line with the cutting line 3|. The bifurcated roller support 23 with the rollers 22 are held in a raised position by the'thumb of the hand, designated 33, and shown in phantom lines.

Fig. 6 shows the cutting operation of my canvas cutter and butt joining device wherein the said canvas cutter and butt joining device it is pushed forward in the direction of arrow if in Fig. 65,

causing the canvas selvage portions 29 and 35 1,

to be held tautly against the edge of knife blade l5 by rollers 22 making a clean straight out. At the end of the cutting operation, the severed selvages 29 and 3!! are removed from the wall by lifting the edge of canvas length 21, as shown in Fig. 7. The said canvas 21 is replaced leaving straight and even butt joint 32, a result so necessary in the application of decorators canvas to walls.

A most important feature of my invention is the impossibility of damaging either the wall or the blade of the cutting knife due to the design and position of the knife within the guide shoe. The said cutting knife may be bevelled at both ends, designated and shown in Fig. 1,

so that the knife may be removed and reversed when the cutting portion becomes dul1 through use.

Although my invention has been described, the terms used are to be deemed terms of description rather than terms of limitation, my intention being to retain the right to all mechanical equivalents of the structural elements depicted, provided'they fall within the purview of the appended claims.

Having thus disclosed and revealed my invention, what I claim as new and desire to secure by Letters Patent is:

1. Canvas cutter and butt jointing means com prising, handle means terminating in a downwardly depending slotted guide shoe holding portion, guide shoe means having one end thereof secured in the said slotted guide shoe holding portion and terminating in a channelled toe portion, knife blade means secured in angular relationship in the said slotted guide shoe holding portion and the said channelled toe portion, bifurcated roller support means pivotably secured to the said handle means, guide rollers rotatably secured to the lowerterminus of saidbifurcated roller support means astraddle the said knife blade means, spring means interconnecting the said handle means and the free end of the said bifurcated roller support means adapted to hold said guide rollers in a firm and close contact with the work, screw and wing nut means securing the said guide shoe means and one end of the said knife blade means, and washer means secured adjacent the head of said screw and wing nut means, the said bifurcated roller support means being provided with a stop portion to limit .the downward movement thereof.

tion, guide shoe means having one end thereof secured in the said slotted guide shoe holding portion and terminating in a channelled toe portion, knife blade means secured in angular relationship in the said slotted guide shoe holding portion and the said channelled toe portion, bifurcated roller support means, pivotably secured to the said handle means, guide rollers rotatably secured to the lower terminus of said bifurcated roller support means astraddle the said knife blade meana'spring means interconnecting the said handle means and the free end of the said bifurcated roller support means adapted to hold said guide rollers in'a firm and close contact with thework, tubular spacer means connecting the said lower terminus of the said bifurcated roller support means, screw and nut means passing through the said tubular spacer means and the said guide rollers securing the said rollers in rotatable relationship, screw and wing nut means securing the said guide shoe means and one end of the said knife blade means, and washer means secured adjacent the head of said screw and wing nut means, the said bifurcated roller support means being provided with a stop portion to limit the downward movement thereof.

3. Canvas cutter and butt jointing means comprising, handle meansterminating in a downwardly depending slotted guide shoe holding portion, guide shoe means having one end thereof secured in the said slotted guide shoe holdin portion and terminating in a channelled toe portion, knife blade means secured in angular relationship in the said slotted guide shoe holding portion and the said channelled toe portion, bi furcated roller support means pivotably secured to the said handle means, guide rollers rotatably secured to the lower terminus of said bifurcated roller support means astraddle the said knife blade means, and spring means interconnecting the said handle means and the free end of the said bifurcated roller support means adapted to hold said guide rollers in a firm and close contact with the work, the said knife blade means being provided with bevelled ends to permit reversal thereof. 1

4. Canvas cutter and butt jointing means comprising, handle means terminating in a downwardly depending slotted guide shoe holding portion, guide shoe means having one end thereof secured in the said slotted guide shoe holding portion and terminating in a channelled toe portion, knife blade means secured in angular relationship in the said slotted guide shoe holding portion and the said channelled toe portion, b-ifurcated roller support means pivotably secured to the said handle means, guide rollers rotatably secured to the lower terminus of said bifurcated roller support means astraddle the said knife blade means, spring means interconnecting the said handle means and the free end of the said bifurcated roller support means adapted to hold said guide rollers in a firm and close contact with the work, tubular spacer means connecting the said lower terminus of the said bifurcated roller support means, and screw and nut means passing through the said tubular spacer means and the said guide rollers securing the said rollers in rotatable relationship, the said knife blade means being provided with bevelled ends to permit reversal thereof.

5. Canvas cutter and butt jointing means comprising, handle means terminating in a downwardly depending slotted guide shoe holding portion, guide shoe means having one end thereof secured in the said slotted guide shoe holding portion and terminating in a channelled toe portion, knife blade means secured in angular relationship in the said slotted guide shoe holding portion and the said channelled toe portion, bifurcated roller support means pivotably secured to the said handle means, guide rollers rotatably secured to the lower terminus of said bifurcated roller support means astraddle the said knife blade means, spring means interconnecting the said handle means and the free end of the said bifurcated roller support means adapted to hold said guide rollers in a firm and close contact with the work, and screw and wing nut means securing the said guide shoe means and one end of the said knife blade means, the said knife blade means being provided with bevelled ends to permit reversal thereof.

6. Canvas cutter and butt jointing means comprising, handle means terminating in a downwardly depending slotted guide shoe holding portion, guide shoe means having one end thereof secured in the said slotted guide shoe holding portion and terminating in a channelled toe portion, knife blade means secured in angular relationship in the said slotted guide shoe holding portion and the said channelled toe portion, bifurcated roller support means pivotably secured to the said handle means, guide rollers rotatably secured to the lower terminus of said bifurcated roller support means astraddle the said knife blade means, spring means interconnecting the said handle means and the free end of the said bifurcated roller support means adapted to hold said guide rollers in a firm and close contact with the work, tubular spacer means connecting the said lower terminus of the said bifurcated roller support means, screw and nut means passing through the said tubular spacer means and REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 625,550 Geisendorff et a1. May 23, 1899 944,019 Conrow Dec. 21, 1909 1,493,484 Enholdt May 13, 1924 2,294,018 Borst Aug. 25, 1942 

